Steam-boiler.



No. 742,931. PATENTED NOV. 3, 1903 W. C. TEMPLE.

STEAM BOILER.

APPLIoATIoN FILED MAR. ze, 1901. BENBWED JAN. 1o, 1902.

N0 MODEL.

7 ,w1/6.56@ WM@ 2 "UNITED STATES l Patented November 3, 1903.

PATENT Orrrcn.

IVILLIAM C. TEMPLE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE AULTMAN AND TAYLOR MACHINERY COMPANY, OF MANSFIELD, OHIO,

A CORPORATION OF OHIO.

, STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 742,931, dated November 3, 1903 Application led March 26, 1901. Renewed January l0, 1902. Serial No. 89,223. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM C. TEMPLE, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Steam-Boilers, of which the following is a full, clear, and exact description, reference being had tothe accompanying drawing, forming' part of this specilication, which shows in vertical section a 1o steam-boiler constructed in accordance with my invention. y

In the drawing, 2 represents the shell or brick setting of my improved boiler. 3 is the extension at the base thereof, which constir5 tutes the grate-chamber, and 4 4 are gratebars arranged therein.

5 is a steam-drum at the upper portion of the setting, and 6 is a mud-drum lat the lower portion thereof, these drums being connected zo by an annular bank of Water-tubes 7, which preferably are inclined, so as to diverge somewhat downwardly and to constitutea downwardly-Haring interior space 8.

9 9 are baffles, which may be placed in the space S in order the better to direct the products of combustion among the tubes. The grate-chamber 3 does not open directly into the space among the tubes; but there is a baffle-wall 10, which surrounds the tubes at 3o the level of said chamber 3, an annular passage 11 being arranged between the bafewall and the shell2 in order to permit the hot gases to pass from the chamber 3 and from the annular extension thereof 3', which extends around the baffle-wall.

The outlet-due l2 of the boiler extends downwardly through the mud-drum 6 to the chimney.

As thus constructed the operation of the 4o boiler is as follows: The iaine and gaseous products of combustion from the chamber 3 pass around the wall 10, through the extension 3', and thence escape in an annular sheet through the passage 11 upwardly around and ,45 among the tubes, theimpetus whichthe gases receive in passing through the constricted passage 11 causing them to ascend rapidly toward the upper portion of the boiler-setting. The gases are then caused to descend among the middle tubes of the bank and along 5o the same to the outlet-fine 12, so that they pass up and down in a recurrent course, as indicated by the arrows in the drawing. In this manner I secure very desirable results and obtain a boiler of high economy and effciency.

It will be understood that the principles of my invention may be applied to boilers havingtheir tubes and drums arranged somewhat differently frorn the construction shown 6o in the drawing, although I intend also to make specific claim to said construction, and that the arrangement of the combustionchamber may be modilied to adapt the boiler for burning gas instead ofcoal. Within the scope of my broad claims the boiler may be adapted for use as a waste-heat boiler by reversing the fines, using the ilue 12 through the mud-drum as an inlet for the hot gases and connecting the chamber 3 with an out- 7o let-due leading lo the chimney.

1. A boiler having upper and lower drums, an upwardly/extending bank of tubes, a bafe-wall outside the lower portion of the bank,

van inlet-flue and anv outlet-Elue for the products of combustion, one of said fines extending through the lower drum and communicating with the space among the bank of tubes, and l[he other flue communicating with the 8o space around the tubes by way of a passage outside said wall; substantially as described.

2. A boiler havingr upper and lower drums, an upwardly-extending bank of tubes, a combustion-chamber having a passage for the gases extending upwardly among said tubes from the combustion-chamber above the level of the combustion-chamber and above that of the lower drum, and an outlet-flue for the gases extending through said lowerdrum and 9o communicating with the stack; substantially as described. Y

3. A boiler having an upwardlyexteuding bank of tubes, and a lower drum at the base of the tubes, a combustion-chamber, a baflewall shielding the tubes at the lower portion thereof, and an outlet for the gases extending through said lower drum, said combustionbank of tubes, a combustion-chamber, a baffie-Wall shielding the tubes at the lower portion thereof, and an outlet forv the gases eX- tending through the lower drum at the base of the tubes, said combustion-chamber being arranged to discharge its gases upwardly around and past the baffle-wall among theV tubes; substantially as described.

In'testimony whereof I have hereunto set my hand.

WILLIAM C. TEMPLE.

Witnesses:

CARRIE W. TEMPLE, DE BATCHELOR. 

